If America is known as the world's "melting pot," then New York can be viewed as a cross-section of that. It is one of the most diverse cities in the world with the sights, sounds and smells of cultures the world over."

One of the most unique smells is probably the 60 pounds of grilled kangaroo served up weekly by Public, a restaurant in Little Australia.

By some estimates, 13,000 Aussies live in New York City, leaving a distinctive mark on blocks just north of Little Italy (Nolita) and south of the East Village," according to the New York Times.

In addition to merely being of interest to Americans who may not want to fly all the way to Australia, the growth of Little Australia proves that niche businesses can be successful if they can find the right audience. For native Australians living in New York, now might be the time to open a shop or restaurant offering goods or services that recall their homeland.